Our AC unit over the bed has 4 outlets for the air, 2 facing rear & 2 facing forward. They are adjustable, so we close off the two facing the rear.
I have fabricated ducting which is approx 8 ft long, stuck to the ceiling with round dots of (what else) velcro. We leave it in place, it doesn't interfere with closing.
On really hot days I use a fan on the counter which is angled up towards the end of the duct. This seems to work best for getting the cooler air into the front of the TM.
I am attaching some pics, hope they show up.
Dan
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